diff --git a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents.dm b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents.dm
index cd20ab43708..d86016f96ab 100644
--- a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents.dm
+++ b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents.dm
@@ -395,6 +395,34 @@ datum/reagent/slimetoxin
 	description = "A corruptive toxin produced by slimes."
 	color = "#13BC5E" // rgb: 19, 188, 94
 
+datum/reagent/unstableslimetoxin
+	name = "Unstable Mutation Toxin"
+	id = "unstablemutationtoxin"
+	description = "An unstable and unpredictable corruptive toxin produced by slimes."
+	color = "#5EFF3B" //RGB: 94, 255, 59
+	metabolization_rate = INFINITY //So it instantly removes all of itself
+
+datum/reagent/unstableslimetoxin/on_mob_life(var/mob/living/carbon/human/H as mob)
+	..()
+	H << "<span class='warning'><b>You crumple in agony as your flesh wildly morphs into new forms!</b></span>"
+	H.visible_message("<b>[H]</b> falls to the ground and screams as their skin bubbles and froths!") //'froths' sounds painful when used with SKIN.
+	H.Weaken(3)
+	sleep(30)
+	var/list/blacklisted_species = list(/datum/species/zombie, /datum/species/skeleton, /datum/species/human, /datum/species/golem, /datum/species/golem/adamantine, /datum/species/shadow)
+	var/list/possible_morphs = typesof(/datum/species/) - blacklisted_species
+	var/datum/species/mutation = pick(possible_morphs)
+	if(prob(90) && mutation && H.dna.species != /datum/species/golem && H.dna.species != /datum/species/golem/adamantine)
+		H << "<span class='danger'>The pain subsides. You feel... different.</span>"
+		H.dna.species = new mutation()
+		H.regenerate_icons()
+		if(mutation == /datum/species/slime)
+			H.faction |= "slime"
+		else
+			H.faction -= "slime"
+	else
+		H << "<span class='danger'>The pain vanishes suddenly. You feel no different.</span>"
+	return 1
+
 datum/reagent/aslimetoxin
 	name = "Advanced Mutation Toxin"
 	id = "amutationtoxin"
diff --git a/code/modules/reagents/Chemistry-Recipes.dm b/code/modules/reagents/Chemistry-Recipes.dm
index c5348ba6616..c3240ad51ea 100644
--- a/code/modules/reagents/Chemistry-Recipes.dm
+++ b/code/modules/reagents/Chemistry-Recipes.dm
@@ -473,6 +473,19 @@ datum/chemical_reaction/pestkiller
 /datum/chemical_reaction/slimemutate/on_reaction(var/datum/reagents/holder)
 	feedback_add_details("slime_cores_used","[replacetext(name," ","_")]")
 
+//Mutated Green
+/datum/chemical_reaction/slimemutate_unstable
+	name = "Unstable Mutation Toxin"
+	id = "unstablemutationtoxin"
+	result = "unstablemutationtoxin"
+	required_reagents = list("radium" = 1)
+	result_amount = 1
+	required_other = 1
+	required_container = /obj/item/slime_extract/green
+	mix_message = "<span class='info'>The mixture rapidly expands and contracts, its appearance shifting into a sickening green.</span>"
+/datum/chemical_reaction/slimemutate_unstable/on_reaction(var/datum/reagents/holder)
+	feedback_add_details("slime_cores_used","[replacetext(name," ","_")]")
+
 //Metal
 /datum/chemical_reaction/slimemetal
 	name = "Slime Metal"
diff --git a/html/changelogs/Xhuis-UnstableMutationToxin.yml b/html/changelogs/Xhuis-UnstableMutationToxin.yml
new file mode 100644
index 00000000000..7ee9a1e1609
--- /dev/null
+++ b/html/changelogs/Xhuis-UnstableMutationToxin.yml
@@ -0,0 +1,5 @@
+author: Xhuis
+delete-after: True
+
+changes: 
+  - rscadd: "Nanotrasen scientists have recently observed a strange genome shift in green slimes. Experiments have shown that injection of radium into an active green slime extract will create a very unstable mutation toxin. Use with caution."